Chiral acetylene thioethers: Synthesis and Pauson-Khand reactions
摘要:
Chiral acetylene thioethers have been prepared in excellent yields from the corresponding thiols. The procedure involves the treatment of the corresponding thiolate with 2-bromo-1,1-diethoxyethane followed by double elimination with LDA and, in some cases, alkylation of the acetylide with alkyl or omega-alkenyl iodides. These compounds have been tested in both intra- and intermolecular Pauson-Khand reactions. This study clearly shows that acetylenic thioethers can be excellent substrates for asymmetric versions of this reaction. (C) 1997 Elsevier Science Ltd.
Chiral acetylene thioethers: Synthesis and Pauson-Khand reactions
摘要:
Chiral acetylene thioethers have been prepared in excellent yields from the corresponding thiols. The procedure involves the treatment of the corresponding thiolate with 2-bromo-1,1-diethoxyethane followed by double elimination with LDA and, in some cases, alkylation of the acetylide with alkyl or omega-alkenyl iodides. These compounds have been tested in both intra- and intermolecular Pauson-Khand reactions. This study clearly shows that acetylenic thioethers can be excellent substrates for asymmetric versions of this reaction. (C) 1997 Elsevier Science Ltd.
Chiral acetylene thioethers: Synthesis and Pauson-Khand reactions
作者:Elvira Montenegro、Marta Poch、Albert Moyano、Miquel A Pericàs、Antoni Riera
DOI:10.1016/s0040-4020(97)00535-8
日期:1997.6
Chiral acetylene thioethers have been prepared in excellent yields from the corresponding thiols. The procedure involves the treatment of the corresponding thiolate with 2-bromo-1,1-diethoxyethane followed by double elimination with LDA and, in some cases, alkylation of the acetylide with alkyl or omega-alkenyl iodides. These compounds have been tested in both intra- and intermolecular Pauson-Khand reactions. This study clearly shows that acetylenic thioethers can be excellent substrates for asymmetric versions of this reaction. (C) 1997 Elsevier Science Ltd.